When you don't score runs and your pitching staff throws batting practice, you're gonna have a bad time.
Sonny Gray's outing by no means indicated that he is back in peak 2015 form, but it wasn't awful. Indeed, he gave up three homers (one of them astonishingly deep), but I'd give him a couple starts to settle back in. He missed most of Spring Training, so it's unsurprising that he made a few mistake; hitters are essentially a month ahead. His fastball was hitting 92-94 with a 95 somewhere in there. He ended up going 6 innings, giving up 4 runs on five hits (3 HRs) and 2 walks.